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【简答题】
在有机化合物中,碳原子都是 价的,碳与碳之间都是通过 _______ 键相结合的,它有三种成键方式,分别是 、 、 。
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参考答案：
举一反三
【单选题】One afternoon, in Paris, I took a trip to an art museum. I was looking forward to a quiet view of some great paintings of excellent artists. A young couple looking at the paintings in front of me were...
A.
The writer was a person with few words.
B.
The writer was waiting for some artists.
C.
The writer was looking for some great paintings.
D.
The writer wanted to enjoy great paintings quietly.
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【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The man didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The man didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【多选题】习近平总书记在七一讲话中指出,我们党团结带领中国人民进行28年浴血奋战,打败日本帝国主义,推翻国民党反动统治,完成新民主主义革命,建立了中华人民共和国。这一伟大历史贡献的意义在于
A.
彻底结束了旧中国半殖民地半封建社会的历史
B.
彻底结束了旧中国一盘散沙的局面
C.
彻底废除了列强强加给中国的不平等条约和帝国主义在中国的一切特权
D.
实现了中国从几千年封建专制政治向人民民主的伟大飞跃
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The men didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【多选题】我们党团结带领中国人民进行28年浴血奋战,打败日本帝国主义,推翻国民党反动统治,完成新民主主义革命,建立了中华人民共和国。这一伟大历史贡献的意义在于,()()(),实现了人民当家作主。
A.
彻底结束了旧中国半殖民地半封建社会的历史
B.
彻底结束了旧中国一盘散沙的局面
C.
彻底废除了列强强加给中国的不平等条约和帝国主义在中国的一切特权
查看完整题目与答案
【单选题】压力升高时，单组分体系的沸点：
A.
升高
B.
降低
C.
不变
D.
不一定变化
查看完整题目与答案
【单选题】我们党团结带领中国人民进行28年浴血奋战,打败日本帝国主义,推翻国民党反动统治,完成(),建立了中华人民共和国。
A.
新民主主义革命
B.
民主革命
C.
旧民主主义革命
D.
辛亥革命
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The man didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【单选题】On the other hand, their rarity clearly makes them popular on social media sites. Deep-sea species may potentially become illegally obtained specimens or food. Humans may end up eating these animals o...
A.
Confirming their identity is very urgent for protection.
B.
Most of them are becoming illegally obtained specimens.
C.
Adorable ones are more likely to be posted on social media sites.
D.
。。。
查看完整题目与答案
相关题目：
【单选题】One afternoon, in Paris, I took a trip to an art museum. I was looking forward to a quiet view of some great paintings of excellent artists. A young couple looking at the paintings in front of me were...
A.
The writer was a person with few words.
B.
The writer was waiting for some artists.
C.
The writer was looking for some great paintings.
D.
The writer wanted to enjoy great paintings quietly.
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The man didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The man didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【多选题】习近平总书记在七一讲话中指出,我们党团结带领中国人民进行28年浴血奋战,打败日本帝国主义,推翻国民党反动统治,完成新民主主义革命,建立了中华人民共和国。这一伟大历史贡献的意义在于
A.
彻底结束了旧中国半殖民地半封建社会的历史
B.
彻底结束了旧中国一盘散沙的局面
C.
彻底废除了列强强加给中国的不平等条约和帝国主义在中国的一切特权
D.
实现了中国从几千年封建专制政治向人民民主的伟大飞跃
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The men didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【多选题】我们党团结带领中国人民进行28年浴血奋战,打败日本帝国主义,推翻国民党反动统治,完成新民主主义革命,建立了中华人民共和国。这一伟大历史贡献的意义在于,()()(),实现了人民当家作主。
A.
彻底结束了旧中国半殖民地半封建社会的历史
B.
彻底结束了旧中国一盘散沙的局面
C.
彻底废除了列强强加给中国的不平等条约和帝国主义在中国的一切特权
查看完整题目与答案
【单选题】压力升高时，单组分体系的沸点：
A.
升高
B.
降低
C.
不变
D.
不一定变化
查看完整题目与答案
【单选题】我们党团结带领中国人民进行28年浴血奋战,打败日本帝国主义,推翻国民党反动统治,完成(),建立了中华人民共和国。
A.
新民主主义革命
B.
民主革命
C.
旧民主主义革命
D.
辛亥革命
查看完整题目与答案
【单选题】听力原文：W: You don't look smart this morning. I can see you're not happy. Come on, what happened? M: I had never expected this would have happened to me. We had a power failure at home last night and I m...
A.
The man is a football fan.
B.
The man needs the woman's help.
C.
The man didn't watch TV last night.
D.
The man often has power failure at home.
查看完整题目与答案
【单选题】On the other hand, their rarity clearly makes them popular on social media sites. Deep-sea species may potentially become illegally obtained specimens or food. Humans may end up eating these animals o...
A.
Confirming their identity is very urgent for protection.
B.
Most of them are becoming illegally obtained specimens.
C.
Adorable ones are more likely to be posted on social media sites.
D.
。。。
查看完整题目与答案
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